U.S. Air Force aircraft armament systems specialists from the New Jersey Air National Guard's 177th Fighter Wing transport Mark 82s onto a trailer on the munitions assembly conveyor pad at Davis-Monthan Air Force Base in Tucson, Ariz., Feb. 22, 2014. Airmen from the 177th assembled and loaded munitions for use at Operation Snowbird, a training facility for U.S. military flying units. (U.S. Air National Guard photo by Airman 1st Class Shane Karp/Released)